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Learning Center
Oophorectomy (ovary removal surgery)
Learn about the risks, recovery and what to expect during surgery to remove the ovaries.
Nuclear stress test
This type of stress test uses a tiny bit of radioactive material to look for changes in blood flow to the heart. Know why it's done and how to prepare.
Nondirected living-donor transplant
Nondirected living donor — Find out what becoming a good Samaritan (nondirected) living organ donor means to transplantation.
Nephrectomy (kidney removal)
Learn about surgery to remove all or part of a kidney.
Neobladder reconstruction
Learn about bladder reconstruction to restore urinary function after bladder removal surgery, including how it's done and possible complications.
Needle biopsy
Common needle biopsy procedures include fine-needle aspiration and core needle biopsy.
Neck lift
Find out how this cosmetic procedure removes excess skin and fat around the jaw line to create a more youthful appearance.
Molecular breast imaging
Learn about this breast cancer screening test that's sometimes used in addition to mammograms, especially for those with dense breast tissue.
Mohs surgery
Find out what to expect during this skin cancer surgery that involves removing thin layers of skin until only cancer-free tissue remains.
Mitral valve repair and mitral valve replacement
If you have a leaky or stiff mitral valve, you may need heart surgery. Learn about the different procedures used to repair or replace this valve.
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